Tuck-creaser for sewing-machines.



J. M. GREIST, DEGD'. m. r. w. & P. mquxsw, ADMINIETBATORE. TUGK GREASEB. FOR SEWING, MACHINES.

' AI'TPLIOATION IZILED JAN. 24,1908. 900,068.

Patented Sept. 29, 1908.

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J. M. GR-EIST, DEGD. n. r. w. a P. R. GBEIST, ummsrmrons. TUGK GBEASER FOR SEWING MACHINES.

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. I I Patented Sept29,1908.

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UNITE-D STATES PATENT OFFICE.

' MARY F. w. GREIST AND PERCY RAYMOND GREIST, OF NEW HAVEN, CONNECTICUT, ADMIN- ISTBATORS OF OHN GREI ST, DECEASED, ASSIGNORSTO THE GREIST MANUFACTUR- ING COMPANYUA CORPORATION OF CONNECTICUT.

TUOK-GREASER For. SEWING-MAGHiNES.

. Specificationof Letters Bat-Lent.

Patented Sept. 29, 1908.

.applicationfiled.January24,1903, Serial No. 412,526.

Be it known that JOHN ceased, late a citizen ofthe United States,

residing at New Haven, in thecounty of New Haven and State of'Connecticut, did invent certain new and useful Improvements in Tuck-Creasers for. Sewing-Machines, of which the following is a specification, reference beinghad therein to the accompanying drawings. r a J This invention relates to sewing machine tuck creasers, and has for itsobject to provide an attachment of this kind most'of the parts of which are of such construction as to be adapted to be formed from sheet metal, while the construction is such that-suitable steadying and guiding means are provided so as to hold the adjustable parts steadily in place when adjusted to anyjdesired positions,

and so as to provide a convenient means I whereby the adjustments of the parts, to provide for tucks of different widths or different distances apart, may be readily effected.

In the accompanying drawings Figure 1 L is a perspective view of the improved tuck:

creaser. Figs. 2 and 3 are top andbottom views, respectively, of thesame. Fig.4 is'a perspective View of the connected tuck creasing members detached from the frame. Fig.

5 is a detailed perspective view of the work guide. Fig. 6 is a detail viewofa-stationary separating plate interposed between; sliding portions of the guide and of the creasin members. Fig. 7 is a cross section on lineF-7, Fig. 2; on line 8-8, Fig. 2. l

-Referring to the drawings, 12 denotes the main frame or bodyof' the attachment the same consisting of a folded piece of sheet metal having a rounded or cylindrical portion 13 at its back andtwolongitudinally extending half round portions 14 one above the other at its front, the-saidmain frame being attached by screws or rivets 15 to a lateral arm 16 extending from a presser-foot portion 17 provided witha shank 18 by which it may be secured to the presser-bar of a sewing machine. Within the rounded or cylindrical portion '13 is mounted a cyline drical rocking bar 19 which is bored axially for the reception of a torsional springwire or rod 20 having at, its front endan arm 21;

Fig. @8 is a cross section 1 bar, it will be understood that the two creasing members of the attachment will be so provided with a notchedcreasing finger 22. The rockingbar 19 is provided with a longitudinalslot 23 for the reception of a lug 24 secured to an operating arm 25 to be engaged by a projection on the needle-bar of a sewing 1machine and having a sleeve-like portion 26 [embracing the said rocking-bar, the said sleeve-like portion 26 being received in a suitable notch formed in the cylindrical portion 13 of the folded metal frame or body 12.

' The engagement of the lug 24 with the walls ofthe longitudinal slot 23 affords means by which said-rocking bar may be operated by .the engagement of a screw or projection on the needle-bar of the machine with the said 1 operating arm, while the said longitudinal slot permits the said rocking bar, with its creasing arm, to be adjusted lengthwise of the attachment.

The rocking-bar 19 is provided near its rear end with an annular groove 27 for the reception of a lug 28 formed on a slotted plate29 which is preferably integral with the arm 30 carrying atits forward end a creasing lip 31 which is in register with the creasing finger 22 carried by the arm 21, so ithat the cloth passin between said creasing finger and lip will 5 marked when the attachment is in operation. The slotted plate 29 is provided with a cone suitably creased or vex longitudinal rib 32 fitting the upper [half-round front portion on the main frame or body 12. j slotted plate 29 with the rocking bar 19, by

Owing to' the connection of the means of the lug 28 on said plate entering the annular groove .27 in the said rocking connected together that they will be simultaneously adjusted lengthwise of the attachment, when such adjustment is necessary; while the construction just referred to provides means whereby the rocking bar will be free to oscillate notwithstanding this connection. j

The work-guide 33 is formed integral with a slotted plate 3 1 having a convex rib 35 fitting in the lower half-round portion 14 at the front of the main frame or body 12.

This ficonstruction provides means whereby said guide may be adjusted longitudinally 1 of the creaser and be steadily held in any desired position of adjustment. r

As it is frequently necessary to adjust the creasing devices and the guide independently of each other it is desirable that they should be separated from each other so that the adjustment of one will not disturb the adjustment of the other, To this end a separating plate 36 is interposed between the slotted plates 29 and 34 so as to prevent them from being in frictional contact with each other, the separating plate being provided with a longitudinal convex rib 37 fitting beneath the convex rib 32 of the slotted plate 29, and the said separating plate 36 is provided with a hole 38 through which passes the clamp-screw 39 by which the parts are secured in position after adjustment by the clamping action of said screw which is tapped in the arm 16 extending laterally from the presser foot 17, the said screw extending through the slots in the plates 29 and 34. l/Vhen the said screw is tightened the upper and lower members of the main frame or body 12 are compressed together, thus clamping the slotted plates 29 and 34: between them, and thereby holding the 1011- gitudinally adjustable creasing members and work-guide securely in place. The separating plate 36 is non-adjustable by reason of the fact that the screw 39 passes through the round hole 38 therein.

To the underside of the main frame 12 is attached a spring 40 having an upturned end 41 which engages the lug 24 on the operating arm 25 and thereby serves to lift said arm after it has been depressed by the needle-bar of the sewing machine.

The peculiar construction of the main frame 12 with its cylindrical rear portion and half-round front portions provides a recess between the bottom ribs afforded by these rounded portions in which the spring 40 and the arm 16 extending laterally from the presser-foot 17, are housed, so as to be out of the way, and so that the attachment may rest flat on the work-plate of the sewing machine; the said cylindrical and halfround portions of the said plate also affording convenient means for receiving the creasing rocking-bar 19 and the guiding convex ribs on the adjustable plates 29 and 34.

From the foregoing it will be apparent that the invention provides a strong and compact sewing machine tuck creaser of convenient and durable construction, and most of the parts of which may be readily stamped from sheet metal, so that the creaser will be inexpensive to manufacture.

Having thus described the invention of the late JOHN M; GREIsr, we claim and desire to secure by Letters Patent:

1. A sewing machine tuck creaser comprising a main frame or body consisting of a folded sheet metal plate having a cylindrical rear portion and two longitudinally extending half round front portions, one above the other combined with tuck-creasing and workguiding devices mounted on said frame or body.

2. A sewing machine tuck creaser comprising a main frame or body consisting of a folded sheet metal plate the upper and lower members of which are adapted to be co1npressed together, of lengthwise adjustable tuck-creasing and worleguiding devices having parts extending between the said members of said main frame or body, and clamping means by which said members may be compressed together to hold the said tuckcreasing and work-guiding devices in any desired positions to which they may have been adjusted.

3. A sewing machine tuck-creaser comprising a main frame or body consisting of a folded sheet metal plate the upper and lower members of which are adapted to be compressed together, of lengthwise adjustable tuck-creasing and work-guiding devices ha ving parts extending between the said members of said main frame or body, a separating plate between the said parts, and clamping means by which said men'ibers may be compressed to hold the said tuck-creasing and work-guiding devices in any desired positions to which they may have been adjusted.

t. A sewing machine tuck creaser comprising a main frame or body consisting of a folded sheet metal plate having a cylindrical rear portion and half round front portions, combined with a rocking bar journaled in said cylindrical rear portion, a creasing arm operated by said rocking bar, a sliding plate having a longitudinal convex rib fitting one of said half round portions, a lower creasing member or lip connected with said sliding plate, a second sliding plate having a longitudinal convex rib fitting the other of said half-round portions, a work-guide connected with said second sliding plate, and clamping means to compress the upper and lower members of said folded body together to secure said creasing devices and work-guide in any desired position of adjustment.

5. A sewing machine tuck-creaser comprising a main frame or body consisting of a folded sheet metal plate having a cylindrical rear portion and half round front portions, combined with a rocking bar journaled in said cylindrical rear portion, a creasing arm operated by said rocking bar, a sliding plate having a longitudinal convex rib fitting one of said half round portions, a lower creasing member or lip connected with said sliding plate, a second sliding plate having a longitudinal convex rib fitting the other of said half-round portions, a work-guide connected with said second sliding plate, a separating plate arranged between said sliding plates and also having a longitudinal convex rib, and clamping means to compress the upper carrying a creasing arm, a sliding plate eX-' tending between said upper and lower members of said main frame or body and loosely connected with said rocking bar, a lower creasing memberconnected wlth said sliding plate, and clamping means forcompressing saidmembers of said main frame or body to secure the tuck-creasing'members in any desired position of adjustment. j

7 In a sewing machine tuck-creaser, the combination with a main frame or body consisting of a folded sheet metal plate having a cylindrical rear portion, of a rocking. ,bar'

journaled in said cylindrical, portion and carrying a creasing arm, a sliding plate. extendlng between said upper andlower members of said main frame or body and loosely connected w1th said rocklng bar, a, lower creasing member connected wlth sald sliding plate, a second sliding plate extending between the members ofsaid frame or body, a work-guide connected with said second sliding plate, and clamping means for compressing said members of said main frame 'or body to secure the tuck creaslng members and work-guide in any desired position of adjustment. 1 i

8. In a sewingfmachine tuck-creaser, the combination with a main frame or body consisting of a folded sheet metal plate having a cylindrical rear portion, of a longitudinally adjustable rocking ,;bar journaled in said cylindrical portion and carrying a creasing arm, a longitudinally adjustable lowercreasing device loosely connected withisaid rocking bar so as to be adjustable therewith, a non-adjustable operating arm connected with said rocking bar,- for oscillating the latter, and a spring attached to the lower' side of said main frame or plate and having an upwardly projecting front end acting on said operating arm to lift said] arm after it has been depressed. 7

9. Ina sewing machine tuck-creaser, the combination with a main frame or body consisting of a folded sheet metal plate having a cylindrical rear portion, of a longitudinally adjustable rocking bar journaled in said cylindrical portion and carrying a creasing arm, a longitudinally adjustable lower creasing device loosely connected with said rocking bar so as to be adjustable therewith, a non-adjustable operating arm connected with said rocking-bar, for oscillating the latter, a spring attached to the lower side of said main frame or plate and having an upwardly projecting front end acting on said operating arm to lift said arm after it has been depressed, a work-guide adjustable independently of said creasing devices, plates extending betweenthe upper and lower members of said main frame or body and connected with said lower creasing device and said workguide, and clamping means for compressing the said members of said main frame or body to secure the creasing and guiding devices in place after adjustment.

10. In a sewing machine tuck creaser, the combination with a main frame or body consisting of a folded sheet metal plate having a cylindrical rear portion, of a longitudinally "adjustable rocking bar journaled in said cylindrical portion and carrying a creasing arm, a longitudinally adjustable lower creasing device loosely connected with said rocking-bar so as to be adjustable therewith, a non-adjustable operating arm connected with said rocking bar, for oscillating the latter, a spring attached to the lower side of said main frame or body and'having an upwardly projecting front end acting on said operating arm to lift said arm after it has been depressed, a work guide adjustable independently of said creasing devices, plates extending between the upper and lower members of said main frame or body and connected with b said lower creasing device and said workguide, a separating plate interposed between the before-mentioned plates, and clamping means for compressing thesaid members of said main frame or body to secure the creasing and guiding devices in place after adj 11stment. 1 I

In testimony whereof we aflix our signatures, in presence of two witnesses.

MARY F. W. GREIST, PERCY RAYMOND GREIS'I, Admz'm'swators 0f the estate of John M.

Grez'st, deceased.

Witnesses H. M. GREIs'r,

L. lVI. FORD. 

